International Environmental 70006008 Limit Switch

Ensure critical equipment protection with the International Environmental 70006008 High Limit Switch, a precise furnace safety sensor engineered for integrated HVACR systems. This OEM replacement part is configured as a normally closed (NC) auto-reset limit switch, designed to disconnect the heating circuit when the supply plenum or heat exchanger exceeds safe operating thresholds. Featuring a calibrated temperature range of L130-L200F, this switch provides essential thermal monitoring in high-performance fan coils and air handling units, preventing heat exchanger damage and potential fire hazards. The therm-o-disc technology ensures reliable continuity during standard operation and rapid circuit interruption upon a temperature rise to the 200?F upper limit. As a veteran-grade HVAC high limit replacement, the 70006008 eliminates the need for manual resets, automatically re-engaging the system once temperatures descend to the 130?F threshold. Its robust construction and precise snap-action response make it the industry standard for maintaining optimal airflow safety and system uptime in demanding commercial environments.

• Precise Thermal Calibration: Fixed 130-200?F operating range allows for seamless HVAC part cross-reference with equivalent International Environmental Corp (IEC) specifications.
• Automatic Reset Functionality: Minimizes nuisance service calls by automatically restoring power to the burner or heating elements once the high-limit condition is resolved.
• Durable OEM Build: Genuine International Environmental parts provide exact fitment, reducing installation time and ensuring electrical compatibility with factory control boards.
• Enhanced Safety Logic: Acts as a primary fail-safe against restricted airflow, blower motor failure, or dirty evaporator coils to prevent equipment overheating.

How do I test the 70006008 limit switch for failure?
Using a multimeter, perform a continuity test across the terminals when the system is cool. You should read 0.0 ohms (closed circuit). If the circuit remains open (OL) at room temperature, the switch has failed and requires replacement.

What causes this high limit switch to trip repeatedly?
Repeated tripping usually signals restricted airflow. Verify the integrity of the air filter, inspect the blower motor for proper RPM, and check for a dirty evaporator coil or blocked ductwork that could be causing heat buildup.

Can this switch be used in electric heat kits?
Yes, the International Environmental 70006008 is commonly utilized in electric heat sections and fan coil units where a 130-200F thermal protection profile is required by the manufacturer.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.